Distinguishing between Pied currawongs: question

I don’t know of any visible difference not even between M & F. It comes down to your word “easily”. The standard answer is by banding them with colour bands.
However there are so many it would be a big task.

Pied currawongs or a Pied currawong visit one of our birdbaths one at a time, i.e. there is not a group hanging around, very often. Is there any way to easily distinguish Pied currawong individuals from each other?

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